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Preparation and characterization of PES/TiO_2 composite membranes

机译：PES / TiO_2复合膜的制备与表征

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摘要

Polyethersulfone (PES)/TiO_2 composite membranes were prepared by phase inversion method with nano-TiO_2 as additive. The influence of TiO_2 on the morphologies and the performances of PES/TiO_2 membranes were investigated through the methods of SEM, XRD, TGA, contact angle goniometer, mechanical strength tests and filtration experiments. The results showed that the structure of membrane was not obviously affected by addition of TiO_2, and the performances such as hydrophilicity, thermal stability, mechanical strength and anti-fouling ability of membrane were enhanced through adding TiO_2 nanoparticles. At 0.5 wt.% TiO_2 content, the composite membrane has an excellent performance, however higher TiO_2 content (than 0.5 wt.%) resulted in defective pore structure of the membranes and decline of the performances, such as permeability and mechanical strength. TGA and mechanical strength analyses indicated good compatibility between polymers and TiO_2 nanoparticles.
机译：以纳米TiO_2为添加剂，通过相转化法制备了聚醚砜（PES）/ TiO_2复合膜。通过SEM，XRD，TGA，接触角测角仪，机械强度试验和过滤实验等方法研究了TiO_2对PES / TiO_2膜的形貌和性能的影响。结果表明，TiO_2的加入对膜的结构没有明显的影响，而TiO_2纳米颗粒的加入增强了膜的亲水性，热稳定性，机械强度和防污性能。在TiO 2含量为0.5重量％时，复合膜具有优异的性能，但是更高的TiO 2含量（大于0.5重量％）导致膜的孔结构不良并且性能例如渗透性和机械强度降低。 TGA和机械强度分析表明聚合物与TiO_2纳米颗粒之间具有良好的相容性。

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